diff --git a/Gemfile.lock b/Gemfile.lock
index 9a8fb86..2f2432c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -92,7 +92,7 @@ GEM
       rack-test (>= 0.6.3)
       regexp_parser (>= 1.5, < 3.0)
       xpath (~> 3.2)
-    chartkick (5.1.0)
+    chartkick (5.1.5)
     concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
     crass (1.0.6)